Original description as Gambusia marshi:
- Minckley, Wendell L. 1962. "Two new species of fishes of the genus Gambusia (Poeciliidae) from northeastern Mexico". Copeia. v. 162(n. 2), pp. 391-396 (ffm04578)
Conservation: Gambusia marshi is not evaluated by the international union for the conservation of nature in the iucn red list of threatened species.